Microsoft Visual C#: An Introduction to Object-Oriented Programming, Loose-leaf Version
7th Edition
ISBN: 9781337685771
Author: Joyce Farrell
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 1RQ
A structure that allows repeated execution of a block of statements is a(n) _____________.
- sequence
- selection
- array
- loop
Expert Solution & Answer
Program Plan Intro
To find the correct option that allows the repeated execution of a block of statements.
Program Description Answer
d) loop
Explanation of Solution
Explanation: A loop is a structure. It contains one or more than one Boolean expression within the parentheses that returns true or false. The loop body contains a block of statements within the curly braces. If a loop body contains a single statement then it can be written without the use of curly braces. When the Boolean expression of the looping structure returns true then the body of the loop executes. After every iteration (one execution of the loop), the Boolean expression of the looping structure evaluates again. If the Boolean expression of the looping structure returns the true value, the loop body executes again and the Boolean expression of the looping structure Re-evaluated. When the Boolean expression of the looping structure returns the false value, the execution of the loop stopped.
Conclusion: A loop structure allows the repeated execution of a block of statements.
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Students have asked these similar questions
(c) Consider the following set of processes:
Process ID
Arrival Time Priority
Burst Time
A
2
3
100
B
6
C
10
1 (highest)
2
40
80
D
16
4 (lowest)
20
(3e) Test-and-Set. The Test-and-Set instruction is used in hardware to achieve synchronization.
It can be defined in the following way:
function Test-and-Set (var target: boolean): boolean;
begin
Test-and-Set:= target;
target := true;
end;
Now show how the Test-and-Set instruction can be used to protect a critical region and hence
achieve mutual exclusion (do not worry about satisfying the bounded waiting condition).
(8 points)
repeat
Consider a system with three smoker processes and one agent process. Each smoker
continuously rolls a cigarette and then smokes it. But to roll and smoke a cigarette, the smoker
needs three ingredients: tobacco, paper and matches. One of the smoker processes has paper,
another has tobacco and the third has the matches. The agent has an infinite supply of all three
materials. The agent places two of the ingredients on the table. The smoker who has the
remaining ingredient then makes and smokes a cigarette, signaling the agent on completion. The
agent then puts out another two of the three ingredients, and the cycle repeats.
Given below is a solution to the Cigarette-Smokers Problem. Give initial conditions for the semaphores as
well as plausible values for the variables i & j and r & s, such that the agent and smokers are synchronized.
Write a couple of sentences on why these initial conditions are necessary and sufficient.
Solution:
var a: array [0..2] of semaphore (initial condition =…
Chapter 5 Solutions
Microsoft Visual C#: An Introduction to Object-Oriented Programming, Loose-leaf Version
Ch. 5 - A structure that allows repeated execution of a...Ch. 5 - The body of a while loop can consist of...Ch. 5 - Which of the following is not required of a loop...Ch. 5 - Prob. 9RQCh. 5 - Prob. 1ECh. 5 - Prob. 2ECh. 5 - Prob. 4ECh. 5 - Danielle, Edward, and Francis are three...Ch. 5 - Prob. 6ECh. 5 - Prob. 13E
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